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Engraved Moot Kingfisher

#21a7b3
Notes

Engraved Moot Kingfisher (#21A7B3) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (185°, 69%, 42%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#21a7b3
RGB
rgb(33, 167, 179)
HSL
hsl(185, 69%, 42%)
HWB
hwb(185 13% 30%)
OKLCH
oklch(66.7% 0.108 204.4)
P3
color(display-p3 0.3154 0.6454 0.6934)
HSV
hsv(185, 82%, 70%)
LAB
lab(62.69% -29.50 -15.99)
LCH
lch(62.69% 33.56 208.46)
CMYK
cmyk(82%, 7%, 0%, 30%)

Etymology

Engraved
adjective

Old French engraver, to dig in — past-participle of engrave. As a color modifier, engraved implies a clear-and-precisely-cut quality, the crisp color of Albrecht-Dürer-and-Hogarth hand-pulled engraving-print fine-line incised-image. Sits at the crisp-and-incised end of the grid, parallel to etched and inscribed in usage.

Moot
modifier

Old English mōt, meeting-or-debate-point. As a color modifier, moot implies a debated-and-suspended-and-undecided quality, the visual register of Anglo-Saxon-witenagemot-and-Inns-of-Court-moot hand-argued-and-suspended Anglo-Saxon-witenagemot-and-medieval-moot-court witenagemot-and-Inns-of-Court-and-shire-court mooted-and-debated surfaces under Anglo-Saxon-witenagemot-and-Inns-of-Court oak-bench-and-vellum debate-hall-light. Sits at the modifier-and-mood end of the grid, parallel to void and blank in usage.

Kingfisher
noun

The family Alcedinidae — particularly Alcedo atthis, the European common kingfisher whose iridescent turquoise-blue plumage gives the color its name. The color refers to a male European kingfisher's wing: a saturated, slightly cool deep blue-green with the iridescent satin finish of structurally colored feathers.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#21a7b3
Original
#99a0b4
Protanopia
#8592b3
Deuteranopia
#00aeaa
Tritanopia
#8b8b8b
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon White
2.90:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
7.24:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##21A7B3
Display P3
Display P3
color(display-p3 0.3154 0.6454 0.6934)
P3 has subtle headroomOKLCH chroma 0.108

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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